[NTG-context] Incorrect rendering of * with UTF math fonts

Hi, Using * in superscripts gives wrong glyph size and spacing. For example, with LM math everyhing looks fine: \starttext $x^*$ vs $x^{\ast}$ \stoptext With Cambria, the result is OK (but you can still see the differences in the spacing of * in x^*) \usemodule[simplefonts] \setmathfont[Cambria] \starttext $x^*$ vs $x^{\ast}$ \stoptext With Neo Euler, $x^*$ look really bad. \usemodule[simplefonts] \setmathfont[Cambria] \starttext $x^*$ vs $x^{\ast}$ \stoptext I cannot figure out why this is happening. It definitely looks like a bug at the context end rather than a bug with the fonts. Aditya